Three hundred fifty families from 11 breeding zones in southwest Oregon were grown in a common garden in Corvallis, Oregon, and patterns of genetic variation for seed weight and six first-year seedling characteristics we ...

The capacity for root growth and concentration of indole-3-acetic acid and abscisic acid in the roots of western hemlock seedlings was investigated. The root regenerating capacity (RRC) was defined as the increase in roo ...

Soil organic matter levels, soil temperature and moisture, and vegetation properties were measured along a sequence of death and
regeneration in a mountain hemlock (Tsuga mertensiana) forest. The sequence is produced by ...

The purpose of this paper is to determine the dynamic tensions
that occur in the guyl ines and pendulum lines of a tethered logging
bal loon. A scale model was used to represent the tethered logging
balloon.
During t ...

A survey of partial cuts planted with bare-root seedlings, was conducted on the Prospect Ranger District, Rogue River National Forest, Oregon, during the 1977 summer season. The purpose was to assess stocking and its com ...

An important cultural tool in the greenhouse production of tree
seedlings in the Pacific Northwest is the control of photoperiod. By
artificially lengthening the period of daily exposure to light, it is
possible to in ...

Photosynthetic response to light and temperature was modeled using data from a small red alder (Alnus rubra B. ) community growing in a controlled environment chamber linked to the computer. This new system controls air ...

Several hundred two year old Douglas-fir (Pseudotsuga
menziesii (Mirb.) Franco) seedlings were planted in an enclosure
designed to permit control of soil moisture. The seedlings came
from five seed sources in southern ...

The relationships among total water potential (psi), osmotic potential ([pi]), pressure potential (P), and relative water content (R*) were determined during four consecutive soil drying cycles for shoots of Douglas-fir ...